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Homework Help: Coulombs Law

  1. Dec 11, 2007 #1
    1. The problem statement, all variables and given/known data
    A square with side lengths 2.0 cm has a charge of -1.0x10^-6 at every corner. What is the magnitude and direction of electric force on each charge?

    2. Relevant equations

    3. The attempt at a solution
    =22.5 N
  2. jcsd
  3. Dec 11, 2007 #2


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    Staff Emeritus
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    Gold Member

    You will need to take into account the direction of the force. Set up some coordinate axes and treat the force from each of the 3 other charges on one charge as a vector. Once you've found one the others should be obvious.
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